EP0533705A1 - Automatische gangschaltung. - Google Patents

Automatische gangschaltung.

Info

Publication number
EP0533705A1
EP0533705A1 EP91910260A EP91910260A EP0533705A1 EP 0533705 A1 EP0533705 A1 EP 0533705A1 EP 91910260 A EP91910260 A EP 91910260A EP 91910260 A EP91910260 A EP 91910260A EP 0533705 A1 EP0533705 A1 EP 0533705A1
Authority
EP
European Patent Office
Prior art keywords
hub
invention according
sleeve
movement
chain
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91910260A
Other languages
English (en)
French (fr)
Other versions
EP0533705B1 (de
Inventor
Michael J Mclaren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0533705A1 publication Critical patent/EP0533705A1/de
Application granted granted Critical
Publication of EP0533705B1 publication Critical patent/EP0533705B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/12—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the chain, belt, or the like being laterally shiftable, e.g. using a rear derailleur
    • B62M9/121—Rear derailleurs
    • B62M9/123—Rear derailleurs changing gears automatically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M25/00—Actuators for gearing speed-change mechanisms specially adapted for cycles

Definitions

  • This invention relates to an automatic derailleur shifter system for a vehicle which is a bicycle which includes a pedal powered chain wheel which drives through a chain one of a set of driven sprockets attached to a drive wheel of the vehicle.
  • the derailleur system which includes an " idler gear mounted upon a spring system which tensions the chain and acts to move the chain to a selected one of a set of driven sprockets.
  • the derailleur system has become over the years very finely tuned and now generally includes also a locator arrangement which ensures that the changing mechanism is properly positioned at one of the driven sprockets of the set in preference to intermediate positions.
  • the gear chain system often includes two or even three chain wheels at the drive end which are attached to the pedal arrangement together with a changer system which moves the chain across between the drive sprockets.
  • the McGuire patent provides a relatively simple device in which the sprocket set is caused to move axially of the rear axle by a screw thread coupling on an inner surface of the sprocket set and outer surface of the axle.
  • Figure 1 is a side elevational view of a portion of a bicycle showing the drive system.
  • Figure 2 is a cross-sectional view through the hub of the rear wheel of the bicycle of Figure 1.
  • Figure 3 is a cross-sectional view along the lines 3-3 of Figure 2.
  • Figure 4 is an exploded view of the parts of the hub of Figure 2.
  • Figure 5 is a side elevational view of the opposed side of the bicycle showing only the area adjacent the rear hub and on an enlarged scale.
  • the bicycle of Figure 1 comprises a rear wheel 10 including a hub generally indicated at 11.
  • the hub is mounted
  • SUBSTITUTE SHEET in rear forks 12 including an upwardly inclined portion 13 and a downwardly inclined portion 14 of a conventional frame arrangement.
  • the hub is clamped in a C-shaped bracket 15 at the apex between the portions 13 and 14.
  • a front chain wheel for driving the rear wheel is indicated at 16 and is connected to a conventional pedal system indicated at 17.
  • the chain wheel system includes a plurality of sprockets 18 and 19 which are arranged coaxially around the axis of the pedals 17 and axially spaced in conventional manner.
  • a chain 20 cooperates with the chain wheel system and is movable by a conventional gear changing system indicated at 21 which can transer the chain from the largest chain wheel as shown to one or more of the smaller chain wheels (only partly visible).
  • the hub carries a sprocket set 22 again of conventional construction with the sprockets of the set arranged coaxially and axially spaced so that the chain can move from one to the next under actuation by a derailleur system schematically indicated at 23.
  • the hub generally indicated at 11 includes an
  • SUBSTITUTE SHEET outer hub portion 24 in the form of a sleeve having a hollow interior 25.
  • a pair of axially spaced annular flanges 26 and 27 which include holes 28 as best shown in Figure 3 for connection to spokes which support the outer rim of the wheel 10.
  • the inner surface defining the hollow interior includes a larger portion 29 adjacent the left hand end of the outer hub portion and a larger counterboard portion 30 toward the right hand end of the hub portion.
  • a single bore 31 extends axially of the hub portion at a position outside the smaller portion 30.
  • the smaller portion 30 includes a pair of keyways 32 and 33 extending axially of the hub portion at 180° spacing as best shown in Figure 3.
  • a sleeve member 34 having lengths substantially equal to the length of the smaller portion 30.
  • the sleeve 34 has on its outer surface a pair of ribs extending axially and arranged for cooperation with the keyways 32 and 33, the ribs being indicated at 35. This allows the sleeve to move axially relative to the hub portion but it is constrained to rotate with the hub portion by the cooperation with the ribs and the keyways.
  • An inner surface of the sleeve 34 includes a female screw thread 36 defined by relatively wide bands of rectangular shape.
  • Inside the sleeve is mounted an axially extending extension portion 37 of the sprocket set support member 38.
  • the sprocket set support member includes an annular support surface 39 on which the sprocket set (not shown) is mounted together with a free wheel arrangement which allows the sprocket set to drive forward motion of the support member but to freewheel in the reverse direction.
  • a flange member 40 Forwardly of the support surface 39 is a flange member 40 which carries on a inwardly facing surface 41 thereof, a bearing support portion
  • the axially extended portion 37 includes an outer male screw thread 47 shaped to cooperate with the female screw thread on the sleeve 34.
  • the screw thread has a relatively
  • SUBSTITUTE SHEET large helix angle so that rotation of the support member 38 relative to the hub portion through an angle less than 180° causes movement of the sleeve 34 in an axial direction to its fullest extent.
  • axle 48 including a hollow continuous bore 49 along the length thereof.
  • the outer surface of the axle 48 includes a screw threaded section 50 at each end for_cooperation with a_nut___51.
  • first cylindrical portion 52 Inside the screw threaded portion 50 is a first cylindrical portion 52 followed by a second cylindrical portion 53 and followed by a square portion 54.
  • a slot 55 is found in the square portion and extends through the square portion to cooperate with the channel 49.
  • a cone member 56 surrounds the portion 52 of the axle and defines a bearing receiving section 57 which presses bearing assembly 58 against a surface 59 of the support member 38.
  • the main bearings defined by the bearing 58 allow the support member to rotate freely relative to the cone and thus relative to the axle to which the cone is clamped by the lock nut 51.
  • the bracket portion of the forks of the frame of the bicycle is clamped between the lock nut 51 and an outer wheel nut (not shown).
  • SUBSTITUTE SHEET of the hub portion is provided a sleeve member 60 which is free to rotate relative to the hub portion on bearing 61 defined between surfaces 62 and 63 of the sleeve member and the hub portion respectively.
  • the bearing 61 again defines the main bearing for rotation of the hub relative to the axle.
  • the sleeve member 60 is free to rotate relative to the axle on subsidiary bearings 64 defined between an end surface of the sleeve member indicated at 65 and a cone member 66 clamped to the axle by a nut 67 applied on the threaded portion 50.
  • the sleeve member 60 has a female screw thread 68 on the internal surface thereof which cooperates with a male screw thread on the outer surface 69 of a second member 70.
  • the second member as best shown in Figure 4 cooperates with a square portion 54 of the axle so that it can move axially along the axle but is prevented from rotation of the axle by the square section and also by a transverse pin 72 which passes into the slot 55 and engages a cable 73 extending along the hollow channel 49 of the axle.
  • the cable 73 is thus moved axially along the channel as the second member 70 is forced axially.
  • the cable includes a cable casing 73A inserted into the axle and stabilized by an indent 73B.
  • the cable further includes a cable head 73D received within an indent 73C in the pin 72.
  • a replacement cable can be threaded axially of the axle from the left hand
  • An end face of the second member 70 carries a thrust bearing 75 which engages an end face of the sleeve 34.
  • the sleeve 34 rotates with the hub whereas the second member 70 is held stationary relative to the axle and thus the thrust bearing takes up the rotation and communicates force between the second member 70 and the sleeve 34. Axial movement of the sleeve 34 thus forces the second member 70 axially.
  • the cooperation between the outside screw thread 69 and the inside screw thread 68 on the sleeve member 60 causes the sleeve member to rotate in a clockwise direction as best shown in Figure 5.
  • an annular end flange portion 60A of the sleeve 60 is exposed at the end of the hub opposite to the sprocket set and this acts as a control member for the automatic changing system.
  • the flange 60A is attached to a nipple 76 carried on the end of a wire 77 attached to a spring 78.
  • the spring 78 is mounted within a sleeve 79 connected onto the upwardly inclined fork portion 13 by a bracket 80.
  • the tension on the spring can be adjusted by a nut 81 which causes the sleeve 79 to be moved longitudinally of the wire 77.
  • the spring 78 thus provides a resisting force to the rotation of the flange 60A and thus to the axial movement of the second
  • the torque applied to the sprocket set by the chain causes a movement of the support member in a drive direction relative to the hub thus forcing the sleeve 34 in an axial direction toward the left as shown in Figure 2.
  • This movement is resisted by the spring 78 so that a balance is obtained in which the amount of torque applied is maintained within limits controlled by the spring.
  • the sleeve 34 moves to the left and this acts to move the wire cable 73 to the left thus pulling the cable 73 to actuate the gear change mechanism of the derailleur 23. Automatically therefore the gear change is actuated toward a lower gear as the torque increases.
  • the amount of torque necessary to change gear can be varied by adjusting the effect of the spring 78 in accordance with the weight of the rider.
  • the front change mechanism 21 of the chain wheel set 16 is actuated by a cable 83 shown in Figure 5.
  • the cable is controlled by a V-shaped camtrack 84 defined in a plate 85 carried by the annular flange 60A.
  • the plate is attached to the flange 60A by rivets 86 so as to stand outwardly to one side and lying in a plane of the front face of the flange 60A.
  • the v-shaped camtrack 84 has a bottom end 87, a base of the
  • the device is constrained by the ratio of the helix angle of the screw threads so that the plate moves through an angle of the order of 90 .
  • a rigid wire connector 90 mounted at the end of the wire 83 and including a right angle arm 90B and head 90A slides along the cam track 84 to the base position 88 allowing the spring action (not shown) at the front change mechanisiL21 to cause the chain mechanism to allow the chain to move into position on an intermediate one of the three chain wheels at the chain wheel set.
  • the head 90A of the wire connector runs against a rear face of the cam plate 85.
  • the extended state of the front derailleur is arranged such that it positions the chain on the largest sprocket for high gear operation. Furthermore as the plate 85 is moved from the 45° position to the 90 position, the nipple 90 moves to the outer end 89 of the V-shaped camtrack which at this time has moved in the clockwise direction so that the cable is further released allowing the spring at the change mechanism to cause the chain to move the smallest of the chain wheels.
  • the device is thus set up so that in operation the change mechanism at the sprocket set causes the change firstly from the first to the third of the drive sprockets
  • the device therefore provides an automatic change system which can act both on the rear and the front change systems and is mounted substantially wholly at or within the hub enabling the device to be replaced into a conventional bicycle using the conventional chain system 21 and a conventional derailleur system 23.
EP91910260A 1990-06-11 1991-06-10 Automatische gangschaltung Expired - Lifetime EP0533705B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/535,602 US5033991A (en) 1990-06-11 1990-06-11 Automatic derailleur shifter
US535602 1990-06-11
PCT/CA1991/000196 WO1991019638A1 (en) 1990-06-11 1991-06-10 Automatic derailleur shifter

Publications (2)

Publication Number Publication Date
EP0533705A1 true EP0533705A1 (de) 1993-03-31
EP0533705B1 EP0533705B1 (de) 1994-11-30

Family

ID=24134941

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91910260A Expired - Lifetime EP0533705B1 (de) 1990-06-11 1991-06-10 Automatische gangschaltung

Country Status (11)

Country Link
US (1) US5033991A (de)
EP (1) EP0533705B1 (de)
JP (1) JPH05507891A (de)
CN (1) CN1057236A (de)
AT (1) ATE114569T1 (de)
AU (1) AU7986091A (de)
BR (1) BR9106544A (de)
DE (1) DE69105504D1 (de)
FI (1) FI925589A (de)
MX (1) MX172608B (de)
WO (1) WO1991019638A1 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660278A1 (fr) * 1990-04-03 1991-10-04 Socard Didier Dispositif de gestion synchronisee de derailleurs de bicyclette.
US5197927B1 (en) * 1991-03-20 2000-10-17 Sram Corp Bicycle derailleur cable actuating system
US5135441A (en) * 1991-05-24 1992-08-04 Mark Gelbien Shifting apparatus for multispeed bicycles
IT1251528B (it) * 1991-10-30 1995-05-16 Giuseppe Arrivabene Cambio di velocita' per biciclette,o simili,a comando automatico
JP3470820B2 (ja) * 1993-10-06 2003-11-25 株式会社シマノ 自転車用変速装置
US5356349A (en) * 1993-10-08 1994-10-18 Browning Automatic Transmissions High-efficiency, high-speed control unit for chain shifter
CN2211515Y (zh) * 1994-02-22 1995-11-01 沈乃昌 异形省力增速链盘
US5599244A (en) * 1995-08-14 1997-02-04 Ethington; Russell A. Automatic transmission shifter for velocipedes
KR100241038B1 (ko) * 1997-10-23 2000-03-02 정용철 자전거용 자동변속장치
US6354980B1 (en) 1997-11-10 2002-03-12 Frederic Francis Grant Automatic transmission systems for humanly powered vehicles
US6042495A (en) * 1997-12-24 2000-03-28 Patterson; Richard A. Hydraulically-operated bicycle shifting and braking systems
US6012999A (en) * 1997-12-24 2000-01-11 Patterson; Richard A. Hydraulically-operated bicycle shifting system with positive pressure actuation
US7272027B2 (en) * 1999-09-23 2007-09-18 Netlogic Microsystems, Inc. Priority circuit for content addressable memory
US20030140725A1 (en) * 2001-02-22 2003-07-31 Liu Jen-Chih Manual shift mechanism of a bicycle
US7361109B2 (en) * 2005-05-31 2008-04-22 Kilshaw Richard J Bicycle gear set
US7572199B1 (en) * 2005-07-15 2009-08-11 Calendrille Jr John L Mechanism for adjusting spring tension in a derailleur
US10207772B2 (en) * 2011-01-28 2019-02-19 Paha Designs, Llc Gear transmission and derailleur system
US9033833B2 (en) * 2011-01-28 2015-05-19 Paha Designs, Llc Gear transmission and derailleur system
US9327792B2 (en) * 2011-01-28 2016-05-03 Paha Designs, Llc Gear transmission and derailleur system
US8512182B2 (en) * 2011-06-22 2013-08-20 Kwok Keung TAM Torque-driven automatic transmission device for bicycle
RU2471668C1 (ru) * 2011-08-16 2013-01-10 Лидия Николаевна Федорыч Велосипед с автоматическим переключением передач
TW201400359A (zh) * 2012-04-13 2014-01-01 Macneil Bikes Inc 螺旋式自行車鏈輪、鏈輪系統及具鏈輪系統的自行車
RU2584295C2 (ru) * 2015-04-27 2016-05-20 Владислав Петрович Алёшин Велосипед с автоматическим переключением скоростей
CN109747768A (zh) * 2017-11-03 2019-05-14 天心工业股份有限公司 齿盘安装结构
US20210276663A1 (en) * 2020-03-03 2021-09-09 William W. Nelson Kits to convert single-speed bicycles to multi-speed bicycles
CN112413116B (zh) * 2020-11-23 2022-02-11 八方电气(苏州)股份有限公司 一种变挡调节机构

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US4201095A (en) * 1975-08-25 1980-05-06 Jack Myles Semi-automatic gearshift for dual derailleur bicycle
US4061046A (en) * 1976-09-03 1977-12-06 Lang Richard A Pedal-actuated bicycle gear shift means
US4215872A (en) * 1979-02-07 1980-08-05 Clark Marion A Positive shift derailleur mechanism
DE2933362A1 (de) * 1979-08-17 1981-03-26 Fichtel & Sachs Ag, 97424 Schweinfurt Kettenschaltung
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Also Published As

Publication number Publication date
AU7986091A (en) 1992-01-07
EP0533705B1 (de) 1994-11-30
JPH05507891A (ja) 1993-11-11
WO1991019638A1 (en) 1991-12-26
FI925589A0 (fi) 1992-12-09
MX172608B (es) 1994-01-03
FI925589A (fi) 1992-12-09
ATE114569T1 (de) 1994-12-15
CN1057236A (zh) 1991-12-25
DE69105504D1 (de) 1995-01-12
BR9106544A (pt) 1993-05-25
US5033991A (en) 1991-07-23

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